Evidence of water on Mars found by Mars Reconnaissance Orbiter information
This article needs to be updated. Please help update this article to reflect recent events or newly available information.(October 2015)
Springs in Vernal Crater, as seen by HIRISE. These springs may be good places to look for evidence of past life because hot springs can preserve evidence of life forms for a long time. Location is Oxia Palus quadrangle.
The Mars Reconnaissance Orbiter's HiRISE instrument has taken many images that strongly suggest that Mars has had a rich history of water-related processes. Many features of Mars appear to be created by large amounts of water. That Mars once possessed large amounts of water was confirmed by isotope studies in a study published in March 2015, by a team of scientists showing that the ice caps were highly enriched with deuterium, heavy hydrogen, by seven times as much as the Earth. This means that Mars has lost a volume of water 6.5 times what is stored in today's polar caps. The water for a time would have formed an ocean in the low-lying Mare Boreum. The amount of water could have covered the planet about 140 meters, but was probably in an ocean that in places would be almost 1 mile deep.[1][2]
A major discovery by HiRISE was finding evidence of hot springs. These may have contained life and may now contain well-preserved fossils of life.
^"Mars: The planet that lost an ocean's worth of water".
^Villanueva, L.; Mumma; Novak, R.; Käufl, H.; Hartogh, P.; Encrenaz, T.; Tokunaga, A.; Khayat, A.; Smith, M. (2015). "Strong water isotopic anomalies in the martian atmosphere: Probing current and ancient reservoirs". Science. 348 (6231): 218–221. Bibcode:2015Sci...348..218V. doi:10.1126/science.aaa3630. PMID 25745065. S2CID 206633960.
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